31301010312 has 128 divisors (see below), whose sum is σ = 92826639360. Its totient is φ = 8670424320.

The previous prime is 31301010311. The next prime is 31301010331. The reversal of 31301010312 is 21301010313.

It is a junction number, because it is equal to n+sod(n) for n = 31301010291 and 31301010300.

It is not an unprimeable number, because it can be changed into a prime (31301010311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 309223 + ... + 397769.

It is an arithmetic number, because the mean of its divisors is an integer number (725208120).

Almost surely, 2^31301010312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31301010312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46413319680).

31301010312 is an abundant number, since it is smaller than the sum of its proper divisors (61525629048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31301010312 is a wasteful number, since it uses less digits than its factorization.

31301010312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88683 (or 88679 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 31301010312 its reverse (21301010313), we get a palindrome (52602020625).

Subtracting from 31301010312 its reverse (21301010313), we obtain a palindrome (9999999999).

The spelling of 31301010312 in words is "thirty-one billion, three hundred one million, ten thousand, three hundred twelve".